PB Special tool for film industry for slotted screws size 7 #ad - #7 straight-blade t-handle stubby screwdriver. This screwdriver works perfectly for camera tie-down screws made by oconnor, sachtler, cartoni, panavision, manfrotto, and more. All pb swiss tools are 100% swiss-made. This tool is used to tighten and loosen virtually every camera tie-down screws made by top oems. Every pb swiss tools product comes with an unlimited lifetime guarantee.